Castle poster

TV series

Castle

2009TV-148 seasons8.0 / 10

A whole new chapter in crime solving.

After a serial killer imitates the plots of his novels, successful mystery novelist Richard "Rick" Castle receives permission from the Mayor of New York City to tag along with an NYPD homicide investigation team for research purposes.

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Where to watch in United States

Checked Jul 22, 2026

Castle is available to stream on Disney+, Hulu, Philo, Prime Video, and The Roku Channel in United States. You can also rent or buy it from Google Play, Amazon, Apple TV, and Fandango at Home. Use the direct links below to open the provider.

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Synopsis

After a serial killer imitates the plots of his novels, successful mystery novelist Richard "Rick" Castle receives permission from the Mayor of New York City to tag along with an NYPD homicide investigation team for research purposes.

Season 4 episodes

Choose an episode, then use the watch options above for the show.

← Season 3

Episode 1

Rise

44m7.8 / 10

Detective Beckett fights for her life as Castle, plagued by guilt over his role in the events, struggles to uncover who's behind her brutal shooting. Meanwhile, back at the precinct, Ryan and Esposito have to adjust, as Victoria "Iron" Gates becomes the precinct's new uncompromising Captain.

Episode credits

Directed by Rob BowmanWritten by Andrew W. MarloweGuest stars John M. Jackson, Larry Anderson, Valerie Azlynn, Victor Webster, Joshua Dov, Landon Ashworth, Azure Parsons, Helena Barrett

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Episode 2

Heroes & Villains

44m8.4 / 10

When an ex-con is mysteriously slain in an alley, Castle and Beckett believe a vigilante is behind the murder. But efforts to identify their suspect are thwarted when they discover that he roams the city in a Superhero costume – and may indeed be a Superhero. Can they capture and unmask the killer before he strikes again?

Episode credits

Directed by Jeff BlecknerWritten by David AmannGuest stars Kenneth Mitchell, Hank Harris, Jamie McShane, Valerie Azlynn, Eric Tiede, Michelle Van Der Water, James Ferris

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Episode 3

Head Case

44m7.7 / 10

A murder scene complete with lots of blood but no victim and high tech life-extension science are all part of the investigation as Castle and Beckett try to solve a murder without a body. Meanwhile, Alexis waits to hear news about her application to Stanford

Episode credits

Directed by Holly DaleWritten by David GraeGuest stars Judith Hoag, Andy Umberger, Jordan Belfi, William Atherton, Jared Hillman, Shaun Toub, Susan Grace, Christopher Goodman

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Episode 4

Kick the Ballistics

44m7.7 / 10

While investigating the mysterious shooting death of a young woman, Castle and Beckett face a cop's worst nightmare when they discover that the gun used in the killing is Det. Ryan's old service weapon - the one that was stolen by the serial killer, 3XK. Now with the clock ticking, the team must work to solve the murder, track down 3XK and retrieve Ryan's gun before the killer strikes again.

Episode credits

Directed by Rob BowmanWritten by Moira KirlandGuest stars Ross McCall, Tim Jo, Billy Lush, François Chau, Lanny Joon, Mercedes Colon, Nadine Crocker, Stephanie Nash

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Episode 5

Eye of the Beholder

44m7.6 / 10

A wealthy museum patron is a suspect when a valuable sculpture is stolen. Castle and Beckett investigate the theft with the help of an insurance investigator who sets her sights on Castle.

Episode credits

Directed by John TerleskyWritten by Shalisha FrancisGuest stars Kristin Lehman, Jessica Tuck, David Hunt, Aasha Davis, Jessica Lundy, James Read, Benny Ciaramello, Carolyn Ratteray

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Episode 6

Demons

44m8.0 / 10

While doing some investigative work at a New York mansion, a prominent ghost hunter is murdered. Castle and Beckett must figure out if paranormal activities are to blame.

Episode credits

Directed by Bill RoeWritten by Rob HanningGuest stars Fredric Lehne, Amanda Walsh, Vernee Watson, Mark Harelik, Vincent Guastaferro, Joel Stoffer, Shawn Carter Peterson, Philipp Karner

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Episode 7

Cops & Robbers

44m8.0 / 10

A crew of bank robbers disguised as classic television doctors take hostages which include Castle and Martha. But things are complicated by the fact that Beckett's on the outside having her every move scrutinized by a hostage negotiator and Castle's on the inside with information that the hostages are just a distraction for a more ominous plan.

Episode credits

Directed by Bryan SpicerWritten by Terence Paul WinterGuest stars Dean Norris, Darren Pettie, Ian Kahn, Jack Laufer, Ty Upshaw, Jonah Wharton, Dawn-Lyen Gardner, Barry Livingston

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Episode 8

Heartbreak Hotel

44m7.2 / 10

During the investigation of the murder of an Atlantic City casino owner at an abandoned warehouse, strong leads emerge for the team in both New York and Atlantic City. As Beckett and Capt. Gates work the New York leads together, Castle naturally chooses to join the detectives for the road trip to "America's Playground," hoping to help solve the case while throwing an impromptu bachelor party for Ryan.

Episode credits

Directed by Bill RoeWritten by Elizabeth Davis BeallGuest stars Richard Burgi, Laura Regan, Susie Castillo, David Figlioli, Tom Waite, Eric Ladin, Jeffrey Vincent Parise, Ashley Wood

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Episode 9

Kill Shot

44m7.9 / 10

A sniper on a killing spree is terrorizing New York City. With the clock ticking down to the next murder and nothing to go on except a killer with no apparent motive but to instill terror, this could prove the team's toughest case yet. The hunt is made even more complicated when Beckett begins to experience increasingly strong moments of PTSD - moments she tries hard to hide from Castle and the detectives.

Episode credits

Directed by David BarrettWritten by Alexi HawleyGuest stars Scott Michael Campbell, Troy Winbush, Mandy June Turpin, Tony Elias, Karissa Vacker, Christina Ferraro, Alexis Carra, Joy Regullano

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Episode 10

Cuffed

44m8.2 / 10mid season

When Castle and Beckett wake up in bed, handcuffed together, in a locked room with no memory of how they got there, they must piece together the mystery of where they are and why, all while trying to escape. But as the two of them adjust to being shackled together, what's the biggest threat they face... the people who abducted them or each other? Meanwhile, Ryan, Esposito and Gates are left to investigate their disappearance in a case where all is not what it seems.

Episode credits

Directed by John TerleskyWritten by Terri Edda Miller, Andrew W. MarloweGuest stars Darin Heames, Deborah Van Valkenburgh, Brett Wagner, Brad Carter

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Episode 11

Till Death Do Us Part

44m7.1 / 10

When a lothario is killed, Castle and Beckett suspect that the victim’s mysterious double life holds the key to his murder. Their investigation leads to a shocking twist that threatens to disrupt Ryan’s wedding with Jenny

Episode credits

Directed by Jeff BlecknerWritten by David GraeGuest stars Mo Mandel, Parisa Fakhri, Sam Hennings, Jenna Gering, Desmin Borges, Jaime Ray Newman, Brian D. Johnson, Donald Agnelli

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Episode 12

Dial M for Mayor

44m7.3 / 10

It was longtime Castle friend Mayor Weldon's political clout that allowed Castle to partner up with Beckett. But now, when a woman is found dead in a car that traces back to the Mayor's motor pool, that partnership comes under fire as the scandal surrounding the investigation threatens to bring down Weldon's administration.

Episode credits

Directed by Kate WoodsWritten by Christine BoylanGuest stars Derek Webster, Rebecca Field, Steven Brand, Cara Pifko, Dave Florek, Mimi Michaels, Victoria Gabrielle Platt, Adam Kulbersh

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Episode 13

An Embarrassment of Bitches

44m7.7 / 10

When a famous dog trainer is killed, the investigation keeps coming back to charismatic reality TV star Kay Cappuccio. Kay, a favorite of tabloids and gossip websites the world over, has achieved stardom without possessing any discernible skill or talent. But there seems to be more to her story than she is letting on -- does that include murder?

Episode credits

Directed by Thomas J. WrightWritten by Rob HanningGuest stars Hilarie Burton Morgan, Justin Hartley, Nana Visitor, Kevin E. West, Scott Lowell, Tommy Savas, Jim Abele, Ed Francis Martin

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Episode 14

The Blue Butterfly

44m8.0 / 10

When Castle and Beckett investigate the killing of a treasure hunter, they discover the case is linked to a mysterious homicide from 1947 involving a hard-boiled private detective. Castle realizes the only way to solve the present-day murder is to solve the murder from the past. The 1947 case comes to life through stylized flashbacks, featuring Castle as the private eye and Beckett as a femme fatale.

Episode credits

Directed by Chuck BowmanWritten by Terence Paul WinterGuest stars Mark Pellegrino, Chad Everett, Patrick Cassidy, Ellen Geer, Sarah Lilly, Darin Toonder, Jared Farid Ward, Zahn McClarnon

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Episode 15

Pandora (1)

43m8.1 / 10

Castle and Beckett pursue a ruthless killer who, they discover, is part of a sinister, international conspiracy. Castle and Beckett are joined on the case by Sophia Conrad, a smart, sexy CIA operative who has a complicated past with Castle.

Episode credits

Directed by Bryan SpicerWritten by David AmannGuest stars Jennifer Beals, Josh Stamberg, David Chisum, Russell Edge, Timothy Carhart, Julia Whelan, Bruno Oliver

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Episode 16

Linchpin (2)

44m8.0 / 10

Castle & Beckett race to find the "Linchpin" in order to stop the first domino in a chain of events which will plunge the United States into war. Their efforts continue to put Castle in contact with Sophia Conrad - a smart, commanding and sexy CIA operative who was Castle's inspiration for Clara Strike in the "Derrick Storm" series of books; and intelligence officer Martin Danberg is back.

Episode credits

Directed by Rob BowmanWritten by Andrew W. MarloweGuest stars Jennifer Beals, Josh Stamberg, Jim Turner, David Chisum, Cal Gibson, Russell Edge, Burnadean Jones, Steve Kramer

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Episode 17

Once Upon a Crime

44m7.6 / 10

When a woman dressed as Red Riding Hood is found dead in the woods with claw marks covering her body, and soon after a murdered Snow White is discovered with a poison apple in her hand, Castle & Beckett find themselves on a Grimm hunt to catch a fairytale killer before he kills again. But nothing is as it seems in a case filled with deceit, betrayal, secrets and murder

Episode credits

Directed by Jeff BlecknerWritten by Kate SargeantGuest stars Meghan, Duchess of Sussex, Taylor Kinney, Sarah Jane Morris, Jason Thompson, Gloria Garayua, June Squibb, Nicholas Downs, Jett Dunlap

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Episode 18

A Dance with Death

44m6.6 / 10

When Odette Morton, a contestant on the hit competition show “A Night Of Dance,” is found murdered in her dressing room, Castle and Beckett must navigate the case’s many twists and twirls without stepping on each other’s toes. But as they delve into Odette’s past, they discover that this reality starlet was harboring a shocking secret that may have led to her death

Episode credits

Directed by Kevin HooksWritten by Moira KirlandGuest stars Millicent Martin, Tim Ransom, Adam J. Harrington, Larry Sullivan, Mike Faiola, Bruce Gray, Neil Brown Jr., Arlene Santana

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Episode 19

47 Seconds

44m8.4 / 10

When a bomb explodes at a protest rally killing five people, Castle and Beckett realize the key to solving the case is to reconstruct the 47 seconds prior to the explosion. Using video and witness accounts, they uncover the shocking truth about who planted the bomb.

Episode credits

Directed by Paul HolahanWritten by Shalisha FrancisGuest stars Christine Woods, Tim Guinee, Walter Perez, Matthew Carey, Samuel Child, Michael Rose, Gilbert Owuor, Nikki Novak

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Episode 20

The Limey

44m7.7 / 10

A devilishly handsome detective from Scotland Yard, Simon Hunt, teams up with Castle & Beckett to find the person responsible for the murder of his friend's daughter. Also, Nigel Wyndham, the Deputy General at the British Consulate whom Castle & Beckett suspect is up to more than just ambassadorial balls and diplomatic luncheons. Meanwhile, Lanie convinces Beckett that she needs to make a move on Castle before it is too late.

Episode credits

Directed by Bill RoeWritten by Elizabeth Davis BeallGuest stars Brett Tucker, Charles Shaughnessy, Omar J. Dorsey, Danielle Bisutti, Chrystee Pharris, Matthew Brenher, Keith Chandler

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Episode 21

Headhunters

44m8.2 / 10

With tensions rising between Castle and Beckett, Castle finds himself a new partner -- Detective Ethan Slaughter (guest star Adam Baldwin, "Firefly"), a tough and colorful cop from the city's gang unit. But Castle gets more than he bargained for when Slaughter shows him a grittier side of police work that puts Castle in the line of fire like never before

Episode credits

Directed by John TerleskyWritten by Alexi HawleyGuest stars Adam Baldwin, Michael McGrady, Reynaldo Gallegos, Anna Zielinski, Clifford McGhee, Mario Ardila, Jr., Miles Tagtmeyer, Michael Dorn

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Episode 22

Undead Again

44m7.1 / 10

When Castle and Beckett investigate the murder of a man with human bite marks on his body, Castle's wild theories start flying. But none are as wild as what their only witness insists happened - a Zombie attack. As the evidence pointing towards an undead assailant piles up, the team plunges into New York's Zombie subculture to find the killer and bring him in -- dead, undead or alive

Episode credits

Directed by Bill RoeWritten by Christine BoylanGuest stars Tiffany Dupont, Josh Braaten, Brandon Keener, Kevin Symons, Maxwell Glick, Ross Kurt Le, Amaris Davidson, Arye Gross

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Episode 23

Always

44m8.4 / 10finale

When the murder of an Army veteran puts Beckett on the trail of the man who shot her, Castle must decide how much he's willing to sacrifice to keep her safe. As secrets are revealed and feelings are put on the table, the lives of the detectives at the 12th Precinct may never be the same.

Episode credits

Directed by Rob BowmanWritten by Terri Edda Miller, Andrew W. MarloweGuest stars Judith Scott, Tahmoh Penikett, Onahoua Rodriguez, Lobo Sebastian, Sal Lopez, Riccardo LeBron, Geoff Pierson

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Episode information updated Jul 24, 2026

More about Castle

Cast

Nathan FillionRichard Castle
Stana KaticKate Beckett
Molly C. QuinnAlexis Castle
Jon HuertasJavier Esposito
Seamus DeverKevin Ryan
Susan SullivanMartha Rodgers
Ruben Santiago-HudsonRoy Montgomery
Tamala JonesLanie Parish

Credits

Created by
Andrew W. Marlowe

Production details

Status
Canceled
Series type
Scripted
Episodes
173
Original language
English

Networks & production

  • ABCUnited States
  • Beacon PicturesUnited States
  • Experimental Pictures
  • ABC StudiosUnited States
  • The Barry Schindel CompanyUnited States
  • MilMar Pictures

Themes

criminal consultantcriminal investigationfemale detectivehomicide detectivenew york citynovelistpolicepolice procedural